Motors for a featherwight battlebot

[maddox]

Motors for a featherwight battlebot

Nickel Metalhydride is the best buy for weight/power/pricetag.

Now, about speed. Cheap batterydrills do about 500-600 rpm on the chuck. This gives you about 5.5 -6 km/hour.

Its maybe an option to remove the second stage gear then.

[Guest]

Motors for a featherwight battlebot

ewans drill motors can do 1000 rpm on 18v.
so thats: pi x 9 = 28 - x1000= 28000

28000 x 60 = 1680000 cm p/h so thats 16.8 km/h (if im not wrong) but thats still not verry fast...

is there no other alternative in stad of drill motors (not to expanzive), that make more rpm?

[maddox]

Motors for a featherwight battlebot

Not easy to fix no.

And what do you call not expensive?

[Guest]

Motors for a featherwight battlebot

about 40 euro

[grant_ploughbot]

Motors for a featherwight battlebot

each? or all together? Gold motors are good and very reliable.

[Guest]

Motors for a featherwight battlebot

each

[ewan]

Motors for a featherwight battlebot

16.8km/h is really above average for a featherweight - certainly if youve got a spinning disc as you should be focusing weight into this.

Whats your budget for the weapon?

[Guest]

Motors for a featherwight battlebot

But can i really let my robot run 16.8 km whit your motors?
And should i juse 1 motor for 2 weels or for each wheel 1 motor?

[Guest]

Motors for a featherwight battlebot

If i buy NiMH accus whats the leest MaH i need (like 2400 or 3600...)
And does somebody know a cheap place to buy NiMH accus?

[dragonmaster_1]

Motors for a featherwight battlebot

Motors for Disc you could try the HTI motors from http://www.robotmarketplace.comwww.robotmarketplace.com motors section misillanious motors they are cheap but powerful 1.44hp at 24v. On our feather Kishar we use 2 to power the Disc. Go to http://www.teamdragon.org.ukwww.teamdragon.org.uk kishar page there are some pics and videos of the set up. For drive we use 18v drill motors at 24v plenty fast enough.

[leorcc]

Motors for a featherwight battlebot

http://www.hopf-modelltechnik.de/http://www.hopf-modelltechnik.de/ if you can read german. Very good pricing for their batteries.

[maddox]

Motors for a featherwight battlebot

We use the graupner speed 900 with good effect. Bit large and heavy with 660 gram each, but very powerfull and efficient for a low RPM (6000 rpm @12V) and good pricetag £20-25 if bought over here.
But the Graupner speed 720 BB torque could also be a good option.

For batteries, if you go pusher, I would take the Hopf Sanyo 3700 sub C NiMH in the 12V 2*5 stick pack cells. £20+P&P per pack.

[dirk_kasten]

Motors for a featherwight battlebot

Hello,
http://www.batt-mann.dewww.batt-mann.de (German homepage)
I think, you can order in English.

[Guest]

Motors for a featherwight battlebot

im netherlands so it will be ok

[maddox]

Motors for a featherwight battlebot

If youre dutch, Yoeri, why dont you join us on the Dutch forum? http://www.dutchrobotgames.nlwww.dutchrobotgames.nl